SICPの2.2.3 Hierarchical Structures の Nested Mappings（入れ子になった写像）の the sequence of permutations of S - x（S-xの順列からなる配列）を Python でやってみた...けどきなかった(´･ω･`) ...と思ったらできた(・∀・) scheme 正常 ;Code used i…

>>> a = [1] >>> b = a >>> c = a >>> a.append(2) >>> a [1, 2] >>> b [1, 2] >>> c [1, 2] >>> b = a[:] >>> a.append(3) >>> a [1, 2, 3] >>> b [1, 2] >>> c [1, 2, 3] >>> a.extend([4]) >>> a [1, 2, 3, 4] >>> a.insert(0, 0) >>> a [0, 1, 2, 3, 4] …